(5+√5)(5-√5)

Asked by praveenapathak44 | 23rd Sep, 2019, 08:43: AM

Expert Answer:

(5 + √5)(5 - √5)
= 52 - (√5)2                      (a - b)(a + b) = a2 - b2
= 25 - 5 
= 20 

Answered by Sneha shidid | 23rd Sep, 2019, 08:54: AM

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